Charley Webb wrote:
I am using a Basic Stamp module hooked to the Wheel Commander for RX and TX data, the problem is that I can send data to the WC, I can also send the calibrate command to the WC (K), and that works, I can also set the baud rate on the WC, HOWEVER I cannot receive ANYTHING from the WC, it's as if there is nothing coming out from the TX on the WC.
Hi, Charley, sorry to hear you are having trouble.Please provide a description of exactly which pins on the WC are connected to exactly which pins on the Basic Stamp. Also, please tell me what baud rate you are using.
Also, when you send the calibrate command, I gather that the wheels move, and that is how you know it works (or at least, does something). I assume you do not receive back the 'a' or 'n' acknowledgement bytes, in response to the calibrate command, right? Do you send the calibrate command before or after sending the baud rate command?
Other things to try:- use an ohm meter and confirm that the wiring on the TX line from the WC definitely connects between the Basic Stamp and the WC - use the ohm meter to confirm that the TX line does not short to the adjacent Vdd or GND pins - use a volt meter to confirm the voltage on the DC power input lines to the WC is at or above 6.2v
Sincerely, Pete Skeggs Nubotics Tech Support